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#1046821 - 01/04/17 01:54 AM 3 in drop springs  
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Stroked_Satinblack86 Offline
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Kentwood, Mi
Hello everyone. Happy New Year! I am looking for a three in drop in the front or all around. Drop spindles won't work with my current brake setup, so I have to go with spring instead. I can't seem to find any 3" springs on Summit or Jegs. If anyone has a part number or website, I would greatly appreciate it. Thanks!

#1046843 - 01/04/17 10:11 PM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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85_SS Offline
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Not sure if these part numbers are still valid, but here is what I used (front drop is probably near 3", but rear was only 1.5" or so):

Belltech PN's:
Front Springs: 4220 (for S-10)
Front Shocks: 7012 (for G-body) [discontinued now & replaced with Belltech Nitro 2 Shocks, P/N 8006]
Rear Springs: 5100 (for G-body)
Rear Shocks: 7517 (for G-body) [discontinued now & replaced with Belltech Nitro 2 Shocks, P/N 8512]

GM:
S-10 front bumpstops: 15956547 (I trimmed the top "cone" portion off the bumpstops as they were a bit too tall once the car was lowered)

Tires are 245/60/15 all around. Spindles are stock and there is very minor rubbing at full lock - just enough to take the grime off the inner fenders.

Lots of pics here:

http://www.montecarloss.com/photopost/showgallery.php?cat=506


[Linked Image]
1985 Chevrolet Monte Carlo SS
5.7 LITRE / TES Headers / SShaker Hood / WC T-5 5-Speed
1970 Pontiac GTO
Orbit Orange Judge Re-creation / YZ RAIII 400 / M21 4-Speed
#1046847 - 01/05/17 12:40 AM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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Stroked_Satinblack86 Offline
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Kentwood, Mi
Thank you! I was wondering about using springs from a different vehicle. I saw a drop spring for a c10. So you think those would work too? I will definitely, check out the ones you mentioned. Thanks again!

#1046851 - 01/05/17 02:39 AM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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MC96 Offline
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St. Johns MI
Most other earlier GM stuff was 5in spring, our cars are 5-1/2, they probably wont fit into the pockets.

Not to mention they are designed to set a truck 3in lower. So they are matched to that vehicles weight and original spring length.

There are s10 arms out there that have the spring bucket dropped low enough that with stock springs its 3in lower. They would fit our cars.
Or you can get a drop spindle and a 1" longer lower ball joint. That would be 3" as well.

Last edited by MC96; 01/05/17 02:39 AM.

86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1046854 - 01/05/17 03:53 PM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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LXXXIV SS Offline
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Lower Peninsula, Michigan
1984 Monte Carlo SS with factory air and all options.
1986 Monte Carlo set of stock 15" wheels.

It took trying three different sets of springs to get this, as the 4220 Belltech springs that Kevin (85__SS) talked about above have been discontinued, and the replacement springs don't fit our car anymore. In addition, the rear 5100 Belltechs only dropped my rear end 1/8" of an inch. 85__SS's car was the inspiration for my friend Chris (cwest) who used the same things Kevin did...... but unfortunately the combo wouldn't work on my car.

Important fact: Monte Carlo SS's do NOT all have the same ride height from the factory for all years. I learned this the hard way.

Chuck


Front 3" L201311 http://opgi.com
Rear 3" L201315 http://opgi.com
Cooper Cobra 215x65 front tires
Cooper Cobra 245x60 rear tires
Used original bump stops.
Nothing rubs anywhere.
Pavement to wheel lip 25.5" front (Stock was 29.5")
Pavement to wheel lip 26.5" rear (Stock was 28 7/8")




#1046860 - 01/05/17 06:23 PM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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SickSpeedMonte Offline
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According to my spreadsheet, Moog 5660's with 3/4 of a coil trimmed off will give a 3" drop. That's assuming the tangential end is really tangential. If not, the drop wont be quite as low and you'll just have to trim more.

#1046864 - 01/05/17 08:30 PM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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Monte_ExpreSS Offline
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Oshawa, Ont. Canada
Does anyone make a 3" drop spring for the front of these cars?? i dont recall ever seeing one listed as 3" drop. Usually to get that much guys will run a combo of either springs and spindles or springs and tall ball joints. Or of course coilovers. For the rear, if you go to the lowering the rear of your g body sticky, Sick speed lists a CPP part number that will get the rear down right around 3".These are the springs I currently run. My experience with the Belltech 5100 was between 1"-1.5" rear.

Chuck, that white SS sits and looks great, good job!

#1046865 - 01/05/17 08:34 PM Re: 3 in drop springs [Re: SickSpeedMonte]  
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Monte_ExpreSS Offline
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Originally Posted By: SickSpeedMonte
According to my spreadsheet, Moog 5660's with 3/4 of a coil trimmed off will give a 3" drop. That's assuming the tangential end is really tangential. If not, the drop wont be quite as low and you'll just have to trim more.


Are you sure its the 5660's? I installed those close to 8 years ago and uncut they sit exactly the same as stock, just much stiffer. 1 coil cut was a 2" drop. I just replaced that set with another new set of 5660 and took off 1/2 which achieved a 3/4" drop.

#1046869 - 01/05/17 08:49 PM Re: 3 in drop springs [Re: Monte_ExpreSS]  
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LXXXIV SS Offline
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Lower Peninsula, Michigan
Originally Posted By: Monte_ExpreSS
Does anyone make a 3" drop spring for the front of these cars?? i dont recall ever seeing one listed as 3" drop. Usually to get that much guys will run a combo of either springs and spindles or springs and tall ball joints. Or of course coilovers. For the rear, if you go to the lowering the rear of your g body sticky, Sick speed lists a CPP part number that will get the rear down right around 3".These are the springs I currently run. My experience with the Belltech 5100 was between 1"-1.5" rear.

Chuck, that white SS sits and looks great, good job!



Thanks Jonathon. Yep, they make those springs. I gave the part numbers above for both front and rear 3" drop springs.

#1046871 - 01/05/17 08:56 PM Re: 3 in drop springs [Re: LXXXIV SS]  
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Monte_ExpreSS Offline
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Oshawa, Ont. Canada
Originally Posted By: LXXXIV SS
Thanks Jonathon. Yep, they make those springs. I gave the part numbers above for both front and rear 3" drop springs.


I was just reading the links after I posted, good info. My concern would be suspension travel with a 3" drop spring, how close are you in the front to sitting on the bump stops?

#1046880 - 01/05/17 09:44 PM Re: 3 in drop springs [Re: Monte_ExpreSS]  
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LXXXIV SS Offline
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Lower Peninsula, Michigan
Originally Posted By: Monte_ExpreSS
Originally Posted By: LXXXIV SS
Thanks Jonathon. Yep, they make those springs. I gave the part numbers above for both front and rear 3" drop springs.


I was just reading the links after I posted, good info. My concern would be suspension travel with a 3" drop spring, how close are you in the front to sitting on the bump stops?


About a half inch. A slightly rougher ride, but well within what I was willing to give up in ride comfort, since I only use it as a weekend driver. It never sees any racing or hard driving. And on smooth roads, there's not much difference between now and when I had stock springs on it.

#1046891 - 01/06/17 06:23 AM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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Stroked_Satinblack86 Offline
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Kentwood, Mi
Thanks guys for all your help! I will be purchasing the springs as soon as I save up some extra cash.

#1046899 - 01/06/17 10:47 PM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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LXXXIV SS Offline
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LXXXIV SS  Offline
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Lower Peninsula, Michigan
Originally Posted By: Stroked_Satinblack86
Thanks guys for all your help! I will be purchasing the springs as soon as I save up some extra cash.


Your username says "Stroked_Satinblack86".

Does this mean you have a 383 in your Monte? If so, I'm sure the stock 305 weighs less than your stroker, which may affect ride height. Get accurate measurements of your ride height all the way around before you start the job.

#1046904 - 01/07/17 12:29 PM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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Joe87monteSS Offline
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If you think about it, the 305 would weigh more being that with the smaller bores, theres more cast iron there.


Joey
Engine/head builder/machinist
1987 Monte Carlo SS 383/4 Speed
2004 Silverado
Facebook

#1046914 - 01/07/17 05:15 PM Re: 3 in drop springs [Re: Joe87monteSS]  
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LXXXIV SS Offline
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Originally Posted By: Joe87monteSS
If you think about it, the 305 would weigh more being that with the smaller bores, theres more cast iron there.



Hmmmmm, I never thought about it like that before. I see what you mean.

#1046947 - 01/08/17 07:10 AM Re: 3 in drop springs [Re: Monte_ExpreSS]  
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85_SS Offline
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Originally Posted By: Monte_ExpreSS
Chuck, that white SS sits and looks great, good job!



Agreed - looks awesome!


[Linked Image]
1985 Chevrolet Monte Carlo SS
5.7 LITRE / TES Headers / SShaker Hood / WC T-5 5-Speed
1970 Pontiac GTO
Orbit Orange Judge Re-creation / YZ RAIII 400 / M21 4-Speed
#1046948 - 01/08/17 07:38 AM Re: 3 in drop springs [Re: Stroked_Satinblack86]  
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Stroked_Satinblack86 Offline
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Kentwood, Mi
I do have a 383, but it isn't installed yet. I didn't think about that though....

#1046952 - 01/08/17 03:36 PM Re: 3 in drop springs [Re: 85_SS]  
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LXXXIV SS Offline
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LXXXIV SS  Offline
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Lower Peninsula, Michigan
Originally Posted By: 85_SS
Originally Posted By: Monte_ExpreSS
Chuck, that white SS sits and looks great, good job!



Agreed - looks awesome!


Thank you, Kevin!

When Chris told me what parts to use, he said they were the same parts you used and showed me pics of your car.

So thanks to you and Chris and your willingness to detail out exactly what you used, and some experimentation on my part, I got exactly what I wanted. And now I get to share too!

That's what I love about this site. The total sharing of knowledge and the helping attitude of so many people.

Chuck

#1046980 - 01/09/17 01:21 PM Re: 3 in drop springs [Re: Monte_ExpreSS]  
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SickSpeedMonte Offline
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MD
Originally Posted By: Monte_ExpreSS
Originally Posted By: SickSpeedMonte
According to my spreadsheet, Moog 5660's with 3/4 of a coil trimmed off will give a 3" drop. That's assuming the tangential end is really tangential. If not, the drop wont be quite as low and you'll just have to trim more.


Are you sure its the 5660's? I installed those close to 8 years ago and uncut they sit exactly the same as stock, just much stiffer. 1 coil cut was a 2" drop. I just replaced that set with another new set of 5660 and took off 1/2 which achieved a 3/4" drop.


It must be that the tangential end isn't truly tangential then. If the coil spacing tightens up at that end, then a coil cut off is less drop than the calculations would estimate. My calculates are just based off of the specs from Moog's website and simple spring and motion ratio equations.

FWIW, the spreadsheet was right on the money when I switched to higher rate (stiffer than 5660's) on my car.


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